EP1479556A1 - Gerät und Verfahren zum Messem des Zustandes eines Mobilgerätes - Google Patents

Gerät und Verfahren zum Messem des Zustandes eines Mobilgerätes Download PDF

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Publication number
EP1479556A1
EP1479556A1 EP04011208A EP04011208A EP1479556A1 EP 1479556 A1 EP1479556 A1 EP 1479556A1 EP 04011208 A EP04011208 A EP 04011208A EP 04011208 A EP04011208 A EP 04011208A EP 1479556 A1 EP1479556 A1 EP 1479556A1
Authority
EP
European Patent Office
Prior art keywords
movable body
dashboard
speed
state
state sensing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04011208A
Other languages
English (en)
French (fr)
Inventor
Yoon-Deock Lee
Hyun-Su Hong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1479556A1 publication Critical patent/EP1479556A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data

Definitions

  • the present invention relates to an apparatus and method for sensing a state of a movable body, and more particularly to a non-contact type state sensing apparatus and method.
  • movable bodies such as ships, airplanes and cars
  • navigation systems for determining positions of the movable bodies and providing an optimum path to a desired destination.
  • the navigation systems In order to determine positions of the movable bodies and provide an optimum path to a destination, the navigation systems must know the speeds of the movable bodies. Accordingly, the navigation systems have been provided with speed sensors for sensing the speeds of the movable bodies.
  • speed sensors used in navigation systems can be classified into contact type speed sensors, which directly sense speed information by means of an odometer, and non-contact type speed sensors, which calculate a speed by means of an accelerometer.
  • the installation process is not only simple, but also there are no additional costs.
  • the non-contact type speed sensor calculates a speed by integrating an output of an accelerometer, any error of the accelerometer is also integrated. Therefore, a speed error increases according to passage of time.
  • a recently improved navigation system provides various services such as a service of "guiding a car to an adjacent gas station according to a fuel state of the car", or a service of "guiding a car to an adjacent gas station after sensing whether trouble exists or not in an engine", or a service of "enabling a car to be receive prompt service by wirelessly informing an adjacent gas station of a current position and abnormal state of the car ".
  • a service of "guiding a car to an adjacent gas station according to a fuel state of the car” or a service of "guiding a car to an adjacent gas station after sensing whether trouble exists or not in an engine”
  • a service of "enabling a car to be receive prompt service by wirelessly informing an adjacent gas station of a current position and abnormal state of the car” even if most of the information has been provided from the existing dashboard, sensors for sensing the current state of the movable bodies must be installed on each corresponding device of the movable bodies in order to sense the state of the movable bodies. Therefore, the costs increase.
  • a state sensing apparatus in a movable body comprising: an image information collecting unit for collecting image information regarding a dashboard of a movable body; and an image recognition unit for analyzing the image information collected by the image information collecting unit and for sensing a state of the movable body.
  • a state sensing method comprising the steps of: (1) collecting image information regarding a dashboard of a movable body; and (2) analyzing the collected image information and sensing a state of the movable body.
  • FIG 1A and FIG 1B are views showing an installation example of a state sensing apparatus of a movable body according to the preferred embodiment of the present invention.
  • FIG 1A is a front view showing an example of a state sensing apparatus of a movable body, which is installed on a front surface of a dashboard
  • FIG 1B is a side view showing an example of a state sensing apparatus of a movable body, seen from a side of a dashboard.
  • the state sensing apparatus for the movable body includes a miniature camera 10 installed on a front surface of a dashboard 20.
  • the miniature camera 10 is spaced a predetermined distance away from the dashboard 20 and collects image information of the dashboard 20.
  • miniature camera 10 collects image information including state information of the movable body.
  • FIG 2 is a block diagram of the state sensing apparatus for the movable body according to one embodiment of the present invention.
  • the state sensing apparatus of the movable body includes an image collecting unit 110, an image recognition unit 120 and a state output unit 130.
  • the image collecting unit 110 collects various image information regarding the dashboard 20 of the movable body.
  • a representative example of the image collecting unit 110 is the miniature camera 10 shown in FIG 1A and FIG 1B.
  • the image recognition unit 120 analyzes the image information collected by the image collecting unit 110 and then senses the state of the movable body.
  • the state of the movable body which can be sensed, includes all information shown in a dashboard of a movable body, such as remaining fuel level and normality or abnormality of operation. For instance, when cars need refueling, most cars enable drivers to recognize this fact through a gas alarm lamp on a dashboard. Recently, cars can inform a driver of operation state of various electronic devices installed through the dashboard.
  • the image recognition unit 120 utilizes known image recognition technologies such as appearance-based recognition technology or feature-based recognition technology.
  • an image recognition technology used in the image recognition unit 120 is differently employed according to the kinds of dashboards or according to methods for outputting a state of a movable body. For instance, when the kinds of dashboards are classified into a digital type as shown in FIG 4A and an analog type as shown in FIG 4B, it is preferred that the digital type dashboard employs the appearance-based recognition technology. Also, it is preferred that the analog type dashboard employs the feature-based recognition technology.
  • the appearance-based recognition technology which compares reference image data of numerals representing a speed with image data taken by a camera, and then recognizes the numerals.
  • the analog type dashboard since a rotation angle of a needle representing a speed must be recognized, it is preferred to employ feature-based recognition technology, which extracts a position of the needle point or a direction which is indicated by the needle, and then recognizes the rotation angle.
  • Representative examples of the appearance-based recognition technology are an auto-correlation technology and a technology using a neural network, and representative examples of the feature-based recognition technology are an edge detection technology and a curve fitting technology.
  • the image recognition unit 120 senses the state of the movable body from the image information of the dashboard by means of such image recognition technologies.
  • the state output unit 130 outputs the state sensed by the image recognition unit 120 to an outside. For instance, when the state output unit 130 is a device which outputs speed information of a movable body, the state output unit 130 outputs the speed information to a device which determines position information of the movable body, or needs the speed information of the movable body in order to calculate an optimum path, in a navigation system.
  • FIG 3 is a flow chart for illustrating the state sensing method for the movable body according to one embodiment of the present invention.
  • the state sensing method of the movable body according to the preferred embodiment of the present invention is described with reference to FIG 3.
  • the image information of the dashboard is collected at step 110 using the miniature camera 10 installed on a front surface of a dashboard 20 as shown in FIG 1A and FIG 1B.
  • the image information of the dashboard is analyzed by means of known image recognition technologies at step S120, the state of the movable body is sensed at step S130, and then the state data is outputted at step S140.
  • the example of image recognition technology used in the steps has been already described with reference to FIG 2, a further description of image recognition technology is omitted.
  • FIG 5 is a view illustrating a method for sensing a speed from an image of an analog dashboard according to one embodiment of the present invention.
  • FIG 5 is a view illustrating an example of a method for sensing a speed by using rotation information of an analog dashboard needle 30.
  • position information in which the dashboard needle 30 has rotated is detected from image information collected by a miniature camera.
  • a rotation angle ⁇ to a position of the detected needle 30 from a rest position of the needle (a dotted line) when a speed of a movable body is zero is calculated.
  • the speed of the movable body is sensed by means of the calculated angle ⁇ .
  • the angle ⁇ of clockwise rotation from the rest position of the needle is calculated.
  • a speed sensing apparatus has already stored speed information in accordance with a rotation angle of a needle, in order to sense the speed of the movable body by means of the rotation information of the analog dashboard needle 30, as the example in FIG 5.
  • the speed sensing apparatus has already stored the speed information of the movable body in accordance with the rotation angle of the dashboard needle 30 such as ''when the rotation angle of the needle is 10°, the speed of the movable body is 20km/h" or "when the rotation angle of the needle is 20°, the speed of the movable body is 40km/h", and then determines the speed of the movable body according to the rotation angle of the needle 30 detected from image information of the dashboard by means of the image recognition technologies.
  • a speed sensing apparatus in order to sense the speed of the movable body by means of the rotation information of the analog dashboard needle 30, it is possible for a speed sensing apparatus to store maximum speed information of the dashboard and a rotation angle of the dashboard needle when the speed is at a maximum, and sense the speed of the movable body by means of a ratio between a current rotation angle of the needle (that is, a rotation angle detected from image information) and the rotation angle of the dashboard needle when the speed is at a maximum.
  • speed information can be detected through an analysis of image information utilizing known image recognition technologies. Accordingly, a description regarding methods for detecting the speed information from the digital dashboard is omitted.
  • the present invention since state information of a movable body displayed on a dashboard is recognized by means of image recognition technologies, the state of the movable body can be accurately sensed even without various sensors and a separate wire connection for the movable body. Furthermore, when the present invention is applied to a navigation system, more accurate position information and path guidance can be provided to users of the navigation system.
EP04011208A 2003-05-23 2004-05-11 Gerät und Verfahren zum Messem des Zustandes eines Mobilgerätes Withdrawn EP1479556A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020030032782A KR20040100422A (ko) 2003-05-23 2003-05-23 이동체의 상태 감지장치 및 그 방법
KR2003032782 2003-05-23

Publications (1)

Publication Number Publication Date
EP1479556A1 true EP1479556A1 (de) 2004-11-24

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EP04011208A Withdrawn EP1479556A1 (de) 2003-05-23 2004-05-11 Gerät und Verfahren zum Messem des Zustandes eines Mobilgerätes

Country Status (4)

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US (1) US7366324B2 (de)
EP (1) EP1479556A1 (de)
KR (1) KR20040100422A (de)
CN (1) CN1573292A (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090237507A1 (en) * 2008-03-20 2009-09-24 Milde Jr Karl F Apparatus for logging motor vehicle speed and time
US20110298808A1 (en) * 2010-06-02 2011-12-08 Toyota Motor Engineering & Manufacturing North America, Inc. Animated Vehicle Attendance Systems
CN103076029A (zh) * 2013-01-24 2013-05-01 上海毕励电子科技有限公司 基于视频识别的电气设备模拟量采集方法
US20160134841A1 (en) * 2014-11-10 2016-05-12 David Christopher Round Verifying information on an electronic display with an incorporated monitoring device
US20170089692A1 (en) * 2015-09-24 2017-03-30 Rita Chattopadhyay Monitoring of gauges
US10168192B2 (en) 2015-12-22 2019-01-01 Intel Corporation Determining values of angular gauges
CN106097480A (zh) * 2016-06-08 2016-11-09 南京航空航天大学 车辆行驶数据记录系统
US10354137B2 (en) 2016-09-30 2019-07-16 Intel Corporation Robust monitoring gauges
CN106934360A (zh) * 2017-03-06 2017-07-07 广州英卓电子科技有限公司 一种基于高速图像识别的车辆精确位移测量方法
CN112307887B (zh) * 2020-09-02 2023-04-21 国网浙江省电力有限公司嘉兴供电公司 一种sf6气体压力智能在线监测预警方法及系统

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US5093867A (en) * 1987-07-22 1992-03-03 Sony Corporation Candidate article recognition with assignation of reference points and respective relative weights
US5283653A (en) * 1992-05-22 1994-02-01 Zenith Electronics Corp. Dual HDTV/NTSC receiver using sequentially synthesized HDTV and NTSC co-channel carrier frequencies
EP1028395A1 (de) * 1999-02-09 2000-08-16 Meta System S.p.A. Vorrichtung zum zeitweisen und/oder permanenten Aufzeichnen von plötzlichen Ereignissen
US20020004695A1 (en) * 2000-02-03 2002-01-10 Glenn Matthew H. Event based aircraft image and data recording system
US20030048202A1 (en) * 2001-09-10 2003-03-13 Michael Francois Cockpit image recording system

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JPH10122871A (ja) * 1996-10-24 1998-05-15 Sony Corp 状態検出装置および状態検出方法
CA2355398A1 (en) 2001-08-16 2003-02-16 Scott Mcginn A system and method for reducing power dissipation in line driver circuits

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5093867A (en) * 1987-07-22 1992-03-03 Sony Corporation Candidate article recognition with assignation of reference points and respective relative weights
US5283653A (en) * 1992-05-22 1994-02-01 Zenith Electronics Corp. Dual HDTV/NTSC receiver using sequentially synthesized HDTV and NTSC co-channel carrier frequencies
EP1028395A1 (de) * 1999-02-09 2000-08-16 Meta System S.p.A. Vorrichtung zum zeitweisen und/oder permanenten Aufzeichnen von plötzlichen Ereignissen
US20020004695A1 (en) * 2000-02-03 2002-01-10 Glenn Matthew H. Event based aircraft image and data recording system
US20030048202A1 (en) * 2001-09-10 2003-03-13 Michael Francois Cockpit image recording system

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Publication number Publication date
US7366324B2 (en) 2008-04-29
US20040234101A1 (en) 2004-11-25
CN1573292A (zh) 2005-02-02
KR20040100422A (ko) 2004-12-02

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